<template>
  <section class="stage">
    <figure class="ball" :style="{ backgroundImage: `url('${bg}')` }">
      <span class="shadow"></span>
    </figure>
  </section>
</template>

<script>
export default {
  props: {
    bg: {
      type: String,
      default: "http://hop.ie/balls/images/world-map-one-color.png",
    },
  },
  data() {
    return {};
  },
};
</script>

<style lang="stylus" scoped>
.ball {
  display: inline-block;
  width: 100%;
  height: 100%;
  margin: 0;
  border-radius: 50%;
  position: relative;
  -webkit-transform-style: preserve-3d;
  background-repeat: repeat-x;
  background-size: auto 100%;
  -webkit-animation: move-map 30s infinite linear;
  -moz-animation: move-map 30s infinite linear;
  -o-animation: move-map 30s infinite linear;
  -ms-animation: move-map 30s infinite linear;
  animation: move-map 30s infinite linear;
}

.ball:before {
  content: '';
  position: absolute;
  top: 0%;
  left: 0%;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  box-shadow: -40px 10px 70px 10px rgba(0, 0, 0, 0.5) inset;
  z-index: 2;
}

.ball:after {
  content: '';
  position: absolute;
  border-radius: 50%;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  -webkit-filter: blur(0);
  opacity: 0.3;
  background: radial-gradient(circle at 50% 80%, #81e8f6, #76deef 10%, #055194 66%, #062745 100%);
}

.ball .shadow {
  position: absolute;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 50% 50%, rgba(0, 0, 0, 0.4), rgba(0, 0, 0, 0.1) 40%, rgba(0, 0, 0, 0) 50%);
  -webkit-transform: rotateX(90deg) translateZ(-150px);
  -moz-transform: rotateX(90deg) translateZ(-150px);
  -ms-transform: rotateX(90deg) translateZ(-150px);
  -o-transform: rotateX(90deg) translateZ(-150px);
  transform: rotateX(90deg) translateZ(-150px);
  z-index: -1;
}

body {
  width: 300px;
  margin: 20px auto;
  background: linear-gradient(to bottom, rgba(100, 100, 100, 0.2) 0%, rgba(255, 255, 255, 0.5) 40%, #ffffff 100%);
  background-repeat: no-repeat;
}

.stage {
  width: 300px;
  height: 300px;
  display: inline-block;
  margin: 20px;
  -webkit-perspective: 1200px;
  -moz-perspective: 1200px;
  -ms-perspective: 1200px;
  -o-perspective: 1200px;
  perspective: 1200px;
  -webkit-perspective-origin: 50% 50%;
  -moz-perspective-origin: 50% 50%;
  -ms-perspective-origin: 50% 50%;
  -o-perspective-origin: 50% 50%;
  perspective-origin: 50% 50%;
}

@keyframes move-map {
  0% {
    background-position: -849px 0;
  }

  100% {
    background-position: 0 0;
  }
}

@keyframes move-map {
  0% {
    background-position: 0 0;
  }

  100% {
    background-position: -849px 0;
  }
}

@keyframes move-map {
  0% {
    background-position: -849px 0;
  }

  100% {
    background-position: 0 0;
  }
}

@keyframes move-map {
  0% {
    background-position: -849px 0;
  }

  100% {
    background-position: 0 0;
  }
}

@keyframes move-map {
  0% {
    background-position: -849px 0;
  }

  100% {
    background-position: 0 0;
  }
}
</style>